Bonjour,
Calculer dans chaque cas le nombre manquant
162,5/25 = 13/2
6/5 = - 4,8/-4
-125/95 = 75/-57
Calculer :
5/6 + 2/3 = 5/6 + (2 x 2) / (3 x 2) = 5/6 + 4/6 = 9/6 = (3 x 3) / (3 x 2) = 3/2
3/4 + -3/16 = (3 x 4) / (4 x 4) - 3/16 = 12/16 - 3/16 = 9/16
8/35 + -4/5 = 8/35 - (4 x 7) / (5 x 7) = 8/35 - 28/35 = - 20/35 = (5 x - 4) / (5 x 7) = - 4/7.